| Place | Postal Code |
|---|---|
| Adapparagama, Mahawewa | None |
| Barudelpola, Mahawewa | None |
| Egodagoda, Mahawewa | None |
| Galamuna, Mahawewa | 51416 |
| Halpanvila East, Mahawewa | None |
| Halpanvila West, Mahawewa | None |
| Hewana, Mahawewa | None |
| Horagolla North, Mahawewa | None |
| Horagolla South, Mahawewa | None |
| Ihala Hattiniya, Mahawewa | None |
| Ihala Koswadiya, Mahawewa | None |
| Ihala Kudawewa, Mahawewa | None |
| Ihala Mahawewa, Mahawewa | None |
| Ihala Walahapitiya, Mahawewa | None |
| Iranavila East, Mahawewa | None |
| Iranavila West, Mahawewa | None |
| Maligawatta, Mahawewa | None |
| Maranda North, Mahawewa | None |
| Maranda South, Mahawewa | None |
| Maravila North, Mahawewa | None |
| Maravila South, Mahawewa | None |
| Maravila Town, Mahawewa | None |
| Maravila Wella, Mahawewa | None |
| Mattakotuwa, Mahawewa | None |
| Mattakotuwella, Mahawewa | None |
| Meda Hattiniya, Mahawewa | None |